A watermark strategy for quantum images based on quantum Fourier transform. (English) Zbl 1264.81131

Summary: We present a robust watermark strategy for quantum images. The watermark image is embedded into the fourier coefficients of the quantum carrier image, which will not affect the carrier image’s visual effect. Before being embedded into the carrier image, the watermark image is preprocessed to be seemingly meaningless using quantum circuit, which further ensures the security of the watermark image. The properties of fourier transform ensure that the watermark embedded in the carrier image resists the unavoidable noise and cropping.


81P70 Quantum coding (general)
81P45 Quantum information, communication, networks (quantum-theoretic aspects)
94A08 Image processing (compression, reconstruction, etc.) in information and communication theory
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